Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Category
Metamorphic And Igneous
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Rainbow Moonstone (White Labradorite)
Labradorite (White varieties with Schiller effect), (Na,Ca)(Al,Si)4O8
gemstone
Magnetite (Charnockite Regional Variation)
Magnetite (Fe3O4)
mineral
White Sapphire
Corundum (Al2O3)
mineral
Likely mica-rich metamorphic rock (schist)
Mica schist, probably biotite–muscovite schist; exact identification requires closer examination
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Magnetite (potentially Hematite-rich)
Magnetite (Fe3O4)
mineral
Garnet in Schist or Pegmatite
Almandine Garnet (Fe3Al2(SiO4)3) in host rock
metamorphic
Zoisite with Rubellite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende (Anyolite)
metamorphic
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
metamorphic
Magnetite (or Magnetic Iron Ore)
Magnetite (Fe3O4)
mineral
Garnet-bearing metamorphic rock, possibly garnet amphibolite or mica schist
Almandine garnet (Fe₃Al₂Si₃O₁₂) in a mafic, amphibole–feldspar-rich matrix
metamorphic
Gneiss
Metamorphic Gneiss
metamorphic
Banded Basalt / Lave Stone or Gneiss Pebble
Igneous/Metamorphic banded pebble
igneous
Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Greenschist
Chlorite Schist
metamorphic
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Mineral
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Quartz
Silicon dioxide (SiO2)
mineral
Clear Quartz (Faceted)
SiO2 - Silicon Dioxide
gemstone
Faceted Clear Quartz or Diamond Simulant
Silicon Dioxide (SiO2) if Quartz or Cubic Zirconia (ZrO2) if Synthetic
gemstone
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz / Feldspar Specimen
SiO2 (Quartz) / KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar Group)
mineral
Quartz (Pebble)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
NaFe3+3Al6(BO3)3Si6O18(OH)4
mineral
Quartz Crystal Rock
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Quartz with inclusions
SiO2
mineral
Reddish-brown crystalline rock, possibly weathered granite or garnet-bearing schist
Indeterminate; likely quartz–feldspar–mica rock with iron oxides, potentially garnet-bearing
metamorphic
Corundum
Corundum (Aluminium oxide, Al2O3)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Polished gray stone, likely labradorite or gneiss
Indeterminate from image; possibly plagioclase-rich gneiss or labradorite-bearing rock
mineral